4.3: Parallel and Perpendicular Lines

Front

What is the slope of a line that is perpendicular to a line with slope m = 3?

Back

-1/3

Front

Are the two linear equations y = 2x + 1 and y = 2x - 4 parallel, perpendicular, or neither?

Back

Parallel

Front

Are the two linear equations y = 3x + 2 and y = -1/3x + 1 parallel, perpendicular, or neither?

Back

Perpendicular

Front

What can be said about the slopes of parallel lines?

Back

Slopes of parallel lines are identical.

Front

What is the slope of a line that is perpendicular to the line represented by the equation y = 2x - 7?

Back

-1/2

Front

If two lines have slopes m1 and m2, what condition must be met for the lines to be perpendicular?

Back

m1 * m2 = -1.

Front

What is the slope of a line that is parallel to a line with slope 4?

Back

4.

Front

If a line has a slope of -2, what is the slope of a line that is perpendicular to it?

Back

1/2.

Front

What is the relationship between the slopes of two lines that are neither parallel nor perpendicular?

Back

The slopes are neither identical nor opposite reciprocals.

Front

How can you determine if two lines are parallel using their equations?

Back

If their slopes are identical.